Sacramental union is the Lutheran theological doctrine of the Real Presence of the body and blood of Christ in the Christian Eucharist.
A note about the real presence in Mikael Agricola Church, Helsinki.
Real presence of Christ in the Eucharist
The real presence of Christ in the Eucharist is the Christian doctrine that Jesus Christ is present in the Eucharist, not merely symbolically or metaphorically, but in a true, real and substantial way.
Catholics give adoration to Christ, whom they believe to be really present, in body and blood, soul and divinity, in sacramental bread whose reality has been changed into that of his body.
A 3rd-century fresco in the Catacomb of Callixtus, interpreted by the archaeologist Joseph Wilpert as showing on the left Jesus multiplying bread and fish, a symbol of the Eucharistic consecration, and on the right a representation of the deceased, who through participation in the Eucharist has obtained eternal happiness
Ecce Agnus Dei ("Behold the Lamb of God") at Solemn Mass
Eucharistic celebration at the Sanctuary of Our Lady of Fatima